Accelerated long-term aging test at turbidity of 300 NTU. Challenge water contaminated with bacteria E. coli and the bacteriophage MS2 to test the performance of microorganism reduction of the filters.
Bachema Microbiological Laboratory for Environmental Testing, Schlieren, Switzerland
Scope of the test was to monitor the flow rate over a long term test period and control the microorganism reduction performance to confirm the membrane durability and function.
At all 3 test points of the challenge test the log-reduction could be shown to be better than at least 8.6 for bacteria and at least 5.8 for viruses, which exceed the required performance of WHO criteria for “Highly Protective” microbial water purifiers. Mean flow rate was 12 liters per hour.
LifeStraw® Community evaluated for removal of E coli, MS2 bacteriophage and Microspheres (bacteria, virus, protozoan cysts).
Underwriters Laboratories Inc., Bangalore, India.
No less than log 5 reduction for all three categories (bacteria, virus, and protozoa), which meets the required performance of WHO criteria for “highly protective” microbial water filters.
LifeStraw® Community evaluated for performance in line with Mexican water testing standards which includes percentage reduction in total coliform and aerobic mesophilics.
Laborotorio Fermi, Mexico City, Mexico
100.00% reduction in total coliforms; 100.00% reduction in total aerobic mesophilics.
Confirmation of 20 nano meter pore size.
Para Membranes Co. Ltd, Korea
- Log 7.28 reduction in bacteria
- Log 5.95 reduction in virus
- The results confirm the fact that the absolute pore size of the membranes is 20 nanometers.